Waterskin
Encyclopedia
A waterskin is a receptacle used to hold water. Normally made of a sheep or cow bladder, it retains water naturally and therefore was very useful in desert
Desert
A desert is a landscape or region that receives an extremely low amount of precipitation, less than enough to support growth of most plants. Most deserts have an average annual precipitation of less than...

 crossings up until the invention of the canteen
Canteen (bottle)
A canteen is a drinking water bottle designed to be used by hikers, campers, soldiers and workers in the field. It is usually fitted with a shoulder strap or means for fastening it to a belt, and may be covered with a cloth bag and padding to protect the bottle and insulate the contents...

. It is still used in some developing nations. Though it may have been used over 5000 years ago by tribal peoples, the first pictures of it are from ancient Assyria
Assyria
Assyria was a Semitic Akkadian kingdom, extant as a nation state from the mid–23rd century BC to 608 BC centred on the Upper Tigris river, in northern Mesopotamia , that came to rule regional empires a number of times through history. It was named for its original capital, the ancient city of Assur...

ns, who used the bladders as floats in 3000 B.C. It also was used by large ancient
Ancient history
Ancient history is the study of the written past from the beginning of recorded human history to the Early Middle Ages. The span of recorded history is roughly 5,000 years, with Cuneiform script, the oldest discovered form of coherent writing, from the protoliterate period around the 30th century BC...

 empire
Empire
The term empire derives from the Latin imperium . Politically, an empire is a geographically extensive group of states and peoples united and ruled either by a monarch or an oligarchy....

s such as Rome
Roman Empire
The Roman Empire was the post-Republican period of the ancient Roman civilization, characterised by an autocratic form of government and large territorial holdings in Europe and around the Mediterranean....

before the advent of the canteen.

Modern waterskins are often made of various plastic or rubber impregnated canvases, or sometimes simply thicker transparent plastics, and are often called water-pouches, water bags, or water bladders, since they are often not involving any sort of skin or leather products. Such modern waterskins offer many features, such as detachable straw-hoses, valves, refill openings of various widths, various closures and handles, styles of covering and/or cases, and removable cases/carry pouches.
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